Tunnelling UDP Traffic Through An SSH Connection: Difference between revisions
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== Overview == | == Overview == | ||
This section describes how to use '''NST''' to tunnel a '''UDP''' traffic conversation through a '''SSH''' connection. For our example we will tunnel [http://ipmitool.sourceforge.net/ IPMItool] traffic ('''UDP''' Port: "'''623'''") through an '''SSH''' connection to a '''Sun Fire X4200''' server's '''Integrated Lights Out Manager''' ('''ILOM''') service processor network interface. Three systems are involved, 2 '''NST''' probes and the ''' | This section describes how to use '''NST''' to tunnel a '''UDP''' traffic conversation through a '''SSH''' connection. For our example we will tunnel [http://ipmitool.sourceforge.net/ IPMItool] traffic ('''UDP''' Port: "'''623'''") through an '''SSH''' connection to a '''Sun Fire X4200''' server's '''Integrated Lights Out Manager''' ('''ILOM''') service processor network interface. Three systems are involved, 2 '''NST''' probes and the '''X4200''' server. Reference information was taken from: "'''[http://zarb.org/~gc/html/udp-in-ssh-tunneling.html Performing UDP tunneling through an SSH connection]'''". | ||
== Step By Step: == | == Step By Step: == | ||
Revision as of 18:18, 22 March 2007
Overview
This section describes how to use NST to tunnel a UDP traffic conversation through a SSH connection. For our example we will tunnel IPMItool traffic (UDP Port: "623") through an SSH connection to a Sun Fire X4200 server's Integrated Lights Out Manager (ILOM) service processor network interface. Three systems are involved, 2 NST probes and the X4200 server. Reference information was taken from: "Performing UDP tunneling through an SSH connection".
Step By Step:
Tunnel A TCP Forward Port Through SSH
First we need to establish the tunnel for a "non-used" TCP port from the local NST probe to the remote NST probe SSH server which shares the same LAN as the destination x4200 server.
root@55.44.22.178's password: Last login: Thu Mar 22 11:18:59 2007 from cpe-72-222-76-188.nycaper.res.rdr.com =============================================== = Linux Network Security Toolkit (NST v1.5.0) = ===============================================
In this example SSH traffic is being NATed through a firewall. The SSH filtered port at the dirty side of the firewall is: "31222". We have chosen to use TCP port forwarding for the "non-used" TCP port: "9999". The remote NST probe's IP Address is: "55.44.22.178". On the local NST probe, TCP port: "9999" is bound to the localhost IP Address: "127.0.0.1".
Use: "nc" To Translate TCP To UDP Forward On The SSH Server Side
On the remote NST probe (SSH server side), we need to open a TCP port listener on the TCP port: "9999" which will forward all network traffic to UDP port: "623" for the IP Address assigned to the X4200 server's ILOM network interface.
